Why is it tacky to throw your own baby shower?

I noticed in another post several mommies-to-be commenting that it is inappropriate to throw your own baby shower. I'm not throwing my own, didn't even have a choice. But since I'm completely new to the baby shower scene (never even been to one), I was curious. We throw our own birthday parties, why not baby showers?

We don't "do" showers of any sort, baby, bridal or what not and we get along just fine, they look like fun but we just don't. I think to each their own and nothing wrong with welcoming a new life weather your first or 7th, there are a lot of uppity ppl on here that hold highly what others think of them, in my opinion. And I think it's tacky to register for gifts, to me that's more greedy then tossing ur own shower. But again opinions are like a$$ holes, everyone has one and they are all different :0)

I have asked this question before myself, I have yet to hear an actual good reason why and I don't get how it's greedy to throw your own shower..wouldn't you still receive gifts if someone threw it for you?
Like I said, I'm still waiting on a good reason.

I think sometimes women are way to judgemental and picky. If its not hurting you do what you want. There is no reason why you can't throw your own shower. Who gives a crap what others think or say!!! That's all I have to say :))

It's a long-held, traditional piece of etiquette that throwing your own shower (baby or bridal) is inappropriate, as the entire purpose of a shower is to "shower" the guest of honor with gifts. It's also considered bad form for your mother or sister to throw you a shower, as well.

As with so many other traditions, this has been changing over the past few decades, and nowadays not a lot of people care (or at least, they won't comment on it in your hearing.) It is far less taboo to host your own baby shower than to host your own bridal shower., and as far as relatives hosting...it's more common than getting a friend to throw one for you.

^^^^If you still expect gifts at your birthday party, are you sure you're even old enough to be having children? I don't think I've received gifts at a birthday party since I was 13. Cards, yes. Presents, no.